\name{readInternal}
\alias{readInternal}
\title{Read internal data, i...}
\usage{readInternal(file)}
\description{Read internal data, i.e. test its existence and return a copy.}
\details{An R object is returned if it exists and is unique.}
\author{Bastian R. Angermann}
\arguments{\item{file}{A character string naming the R object.}}
